Method and apparatus for a millimeter wave communication system

Abstract

Methods and apparatuses are provided herein. A method may include receiving, from a first network node, configuration information to establish a link to a second network node. The first network node may use a first radio access technology (RAT) and the second network node may use a second RAT. The configuration information may include timing information associated with a first one of a plurality of beams of the second network node. The method may include measuring the first one of the plurality of beams of the second network node based on the timing information. The method may include selecting a beam of the plurality of beams of the second network node based on the measurement. The method may include sending a transmission to at least the first network node. The transmission may be an indication the WTRU is configured to establish the link to the second network node.

1 . A wireless transmit/receive unit (WTRU) comprising:
 a processor; and   a transceiver;   the transceiver configured to receive, from a first network node, configuration information to establish a link to a second network node, wherein the first network node uses a first radio access technology (RAT) and the second network node uses a second RAT, wherein the configuration information includes timing information associated with at least a first one of a plurality of beams of the second network node;   the transceiver and the processor configured to measure at least the first one of the plurality of beams of the second network node based on the timing information;   the processor configured to select a beam of the plurality of beams of the second network node based on the measurement; and   the transceiver and the processor configured to send a transmission to at least the first network node, wherein the transmission is an indication that the WTRU is configured to establish the link to the second network node.   
     
     
         2 . The WTRU of  claim 1 , the transceiver and the processor configured to send a transmission to the second network node, wherein the transmission to the second network node is associated with the selected beam of the plurality of beams of the second network node. 
     
     
         3 . The WTRU of  claim 2 , wherein the transmission sent to the second network node is transmitted on a physical channel. 
     
     
         4 . The WTRU of  claim 1 , wherein the timing information associated with at least the first one of the plurality of beams of the second network node includes an indication of a frame and subframe associated with the first RAT used by the first network node. 
     
     
         5 . The WTRU of  claim 1 , wherein the first RAT is a long-term evolution RAT and the configuration information is received in a radio resource control (RRC) message. 
     
     
         6 . The WTRU of  claim 1 , wherein a measurement of the selected beam of the plurality of beams of the second network node meets a predetermined quality requirement. 
     
     
         7 . The WTRU of  claim 1 , the transceiver and the processor configured to simultaneously maintain links to both the first network node and the second network node. 
     
     
         8 . A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
 receiving, from a first network node, configuration information to establish a link to a second network node, wherein the first network node uses a first radio access technology (RAT) and the second network node uses a second RAT, wherein the configuration information includes timing information associated with at least a first one of a plurality of beams of the second network node;   measuring at least the first one of the plurality of beams of the second network node based on the timing information;   selecting a beam of the plurality of beams of the second network node based on the measurement; and   sending a transmission to at least the first network node, wherein the transmission is an indication that the WTRU is configured to establish the link to the second network node.   
     
     
         9 . The method of  claim 8  further comprising, after selecting a beam of the plurality of beams of the second network node based on the measurement, sending a transmission to the second network node, wherein the transmission to the second network node is associated with the selected beam of the plurality of beams of the second network node. 
     
     
         10 . The method of  claim 9 , wherein the transmission sent to the second network node is transmitted on a physical channel. 
     
     
         11 . The method of  claim 8 , wherein the timing information associated with at least the first one of the plurality of beams of the second network node includes an indication of a frame and subframe associated with a first RAT used by the first network node. 
     
     
         12 . The method of  claim 8 , wherein the first RAT is a long-term evolution RAT and the configuration information is received in a radio resource control (RRC) message. 
     
     
         13 . The method of  claim 8 , wherein a measurement of the selected beam of the plurality of beams of the second network node meets a predetermined quality requirement. 
     
     
         14 . The method of  claim 8 , further comprising, after sending the transmission to at least the first network node, simultaneously maintaining links to both the first network node and the second network node.